MC SUPPORT

[Alwayslearningelec]

Does anyone have an actual field picture of MC being support with this(below). Thanks.
.
http://www.erico.com/products/CADDYcfcHammerOnFlangeClip.asp

 

[Alwayslearningelec]

http://www.erico.com/part.asp?part=6M24

So if there was an assembly in an estimating software program that was "MC Cable supported from Steel" and had the components below wouldn't the "flng hanger" and the "hammer on clip" not be applicable. I listed the part numbers for them above and in my first post. THanks.


#10/2C CABLE MC - STL ARMOR
3/8" CONN AC-90 / MC DC SS
3/8" CBL SNAP CLOSE CLIP - BTM MNT ON 1/4" FLNG HNGR
4x 1 1/2" SQ BOX COMB KO
4" SQ BLANK COVER
HAMMER-ON CLIP TO 1/4" FLANGE W/ 1/4-20 HOLE
1/4-20x 3/8 P/H SLOT/PHILLIPS MACHINE SCREW
WIRE CONN RED

 

[tkb]

The link you have in your first post is this item.
HAMMER-ON CLIP TO 1/4" FLANGE W/ 1/4-20 HOLE
It is for mounting the box.

The cable support that is listed as,
3/8" CBL SNAP CLOSE CLIP - BTM MNT ON 1/4" FLNG HNGR
Is this item, http://www.erico.com/products/CADDYcfcCableSnapClip.asp

 

[infinity]

I see many EC's using these (figure 1) with bridle rings, cable ties or tie wire to install MC cable. They come in various flange sizes based on the thickness of the beam.

 

[tkb]

I see many EC's using these (figure 1) with bridle rings, cable ties or tie wire to install MC cable. They come in various flange sizes based on the thickness of the beam.

I have seen EC's use these to support the MC with tyraps.

 

[PEDRO ESCOVILLA]

there is also an Arlington steel cable hange rSMC4, SMC,8SMC4F, really nice, will work in conjunction with the caddy as a support for the noted clip.:thumbsup:

 

[Alwayslearningelec]

I see many EC's using these (figure 1) with bridle rings, cable ties or tie wire to install MC cable. They come in various flange sizes based on the thickness of the beam.

Is that threaded rod in the pic?

 

[tkb]

Is that threaded rod in the pic?

Yes it is threaded into a hole in figure 1.
Figure 2 has a threaded stud so you can mount a box with a nut so you can add a rod coupling for threaded rod.

 

[Alwayslearningelec]

Thanks TKB. DOes anyone have field pics of MC supported? Thanks.

 

[ksmith846]

We use http://www.erico.com/products/CADDYcfcBx2StdHngr.asp to mount the boxes and we use http://www.erico.com/products/CADDYcfcCOJimCbleSpprt.asp to strap the MC onto studs.

We run our MC along the headers and wall supports as much as possible, but when we are in the bar joists we tend to ty wrap the MC to the joists. Really no need for bang on supports especially if you are just going to ty wrap to the clip.

 

[Alwayslearningelec]

That's what I am trying to get more info about. THe diiferent, code acceptable, application used to support MC in a ceiling.

 

[tyha]

Galvenized steel tie wire is the cheapest code acceptable way to strap MC Cable onto barjoist. we try and run behind so its hidden. but its still a legal form of strapping

 

[GUNNING]

Metal on metal

Metal on metal

What about these? http://www.erico.com/products/CADDYcfcFlexibleConduitCableHanger.asp

I still like to make sure I've got something metal on metal.

My old shop teacher in HS said stone on stone metal on metal wood on wood.

 

[Alwayslearningelec]

Galvenized steel tie wire is the cheapest code acceptable way to strap MC Cable onto barjoist. we try and run behind so its hidden. but its still a legal form of strapping

Thanks.... How about off ceiling grid

 

[Fulthrotl]

Thanks.... How about off ceiling grid

not any more. used to be you could run clipped on the main runners...
that's been gone for a while.... caddy used to make a nice clip with 1/2" or
3/4" emt combo clips for the purpose...

used to be you clipped to ceiling wires with caddy clips. not any more.

you must support to the building structure, not the ceiling subsystem.

ty wire, ty wraps, two hole straps, whatever.... depends on job specifications.

i worked a year on a hospital, that 1/2" aluminum flex for light fixtures in a
T bar ceiling had 1/4" running thread dropped down to minnies.....

looked right purty, too.

 

[Alwayslearningelec]

not any more. used to be you could run clipped on the main runners...
that's been gone for a while.... caddy used to make a nice clip with 1/2" or
3/4" emt combo clips for the purpose...

used to be you clipped to ceiling wires with caddy clips. not any more.

you must support to the building structure, not the ceiling subsystem.

ty wire, ty wraps, two hole straps, whatever.... depends on job specifications.

i worked a year on a hospital, that 1/2" aluminum flex for light fixtures in a
T bar ceiling had 1/4" running thread dropped down to minnies.....

looked right purty, too.

Yes but isn't the ceiling grid attached to the structure/deck

 

[ksmith846]

Galvenized steel tie wire is the cheapest code acceptable way to strap MC Cable onto barjoist. we try and run behind so its hidden. but its still a legal form of strapping

Be careful using tie wire. Here in Florida quite a few local AHJ's have made the use of tie wire for MC Cable unaccepted.

Reasoning is that too many fires have been caused from MC cable shorting out inside of walls because the installer tightened the tie wire too tight and it cut into the internal wiring through the gaps in the outer casing.

We can use tie wraps in lieu of the tire wire however.